A cataract is a clouding that develops in the crystalline lens of the eye or in its envelope, varying in degree from slight to complete opacity and obstructing the passage of light. This book reviews research in the field of cataracts inclusive of the application of virtual reality in cataract surgery simulation for ophthalmology training and an analysis of the surface properties of four different intraolcuar lens materials currently used in cataract surgery. Also discussed, herein, is the future of cataract surgeries; disability glare effects and cataracts as a problem of road safety in driving; the pharmacological treatment of ocular inflammatory diseases; among others.